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Number of U.S. structurally deficient road bridges 2019

In 2019 the U.S. state home to the most structurally deficient road bridges was Iowa, at 4,575 structurally deficient bridges in total. Of the ten worst states for bridges deemed imminently unsafe, West Virginia had the lowest number of such bridges, at only 1,531.

Number of structurally deficient road bridges in the U.S. in 2019, by key state

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United States

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Supplementary notes

Bridges are considered structurally deficient if significant load-carrying elements are found to be in poor or worse condition due to deterioration and/or damage, or the adequacy of the waterway opening provided by the bridge is determined to be extremely insufficient to the point of causing intolerable traffic interruptions.

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